My girlfriend's uncle passed away a few months ago and her aunt asked me to appraise the gun collection for sale. She has a Ted Williams Model 300, complete. I don't know about what choke it has, only took a quick look at the gun one time. I believe it has the recoil reduction system as the barrel has some sort of what looks like a recoil/muzzle brake
. If you are interested in the gun, let me know and I can get pics and send them to you.